Carbureting apparatus for gas or vapor engines



(No Model.)

. G. E. HOYT. GARBURETING APPARATUS FOR GAS 0R VAPOR ENGINES.

No. 515,050. Patented Feb. 20, 1894.

A F J. i V

I 7 Z YM WY E W III UNrrn STATES ATENT Fries.

GEORGE E. I'IOYT, OF SAN FRANCISCO, CALIFORNIA.

SPECIFICATION forming part of Letters Patent No. 515,050, dated February 20, 1894. Application filed June 13, 1893. Serial No. 477,479. (Nomodel?) To aZZ whom it may concern:

Be it known that I, GEORGE E. HOYT,acitizen of the United States, residing in the city and county of San Francisco, State of California, have invented certain new and useful Improvements in Oarbureting Apparatus for Gas or Vapor Engines; and I hereby declare the following specification and the drawings therewith to be a full, clear, and exact description of my invention, also the mode of constructing and applying the same.

My invention relates to the volatilizing or vaporizing of carbonaceous fuel 'for gas engines, and consists of a carbureting apparatus, automatic in action, for supplying in proper proportions mingled air and gasoline, or other combustible liquid for engines of the kind.

This apparatus is set forth and explained in the drawings herewith, in which Figure 1 is an elevation of agas engine provided with my improved carbureting apparatus. Fig. 2 is a central longitudinal section through the apparatus. Fig. 3 is a trans verse section on the line a0c of Fig. 2. Fig. 4 is a View of the valve for admitting the liquid fuel to the carburetor.

Like letters of reference are employed to designate corresponding parts in the different figures of the drawings.

Referring to Fig. 1, A is a diagram of agas or vapor engine, B a tank containing gasoline or other liquid fuel, and. O a carburetor for admitting and volatilizing the liquid fuel, and mingling it with air in the proper proportion.

D is a pipe for conveying oil or fuel from the tank B to the carburetor O.

E is an inlet pipe for air, and F a supply pipe for conducting the mingled air and fuel to the engine A.

G is the combustion chamber of the engine A, and H an exhaust pipe forspent'or burned gases. Valves and other operative parts of the engine are omitted, not being required to explain my present invention.

The carburetor 0, shown in section at Figs. 2 and 3, consists of a valve body I, into which is screwed at its ends the airinlet pipe E, and the outlet pipe F leading to the engine. This valve bodyis divided in the usual manner by a diaphragm J, and a valve L mounted on a movable stem M.

To the top of the valve body I is fastened a second valve chamber N provided with an oil or fuel inlet pipe D, and a slide valve 0 mounted in a circular yoke or seat P formed in the valve stem M, so that both valvesL and 0 move together. On the inlet side there is a perforated nipple or plug Q, and opposite to this another plug R containing a follower S resting on a coil spring T, as shown in the section, Fig. 2. The perforated plug Q and the follower S have flat faces between which slides the valve 0 as the stem M and valveL are moved up or down. This valve O, here shown of'circular form, has on one side a groove a that when the valve is raised coincides with the perforation e in the plug Q, and admits a small quantity of the fuel oil from the tank B and pipe D into the cham-- ber N, there to mingle with the air passing through the valve I, as indicated by arrows in Fig. 2. In this manner both valves open simultaneously to an extent accurately regulated by the screw U, against which the valve stem M stops on the upward or opening stroke. The valve 0 rests loosely in the circular seat P formed in the stem M, and is prevented from turning by means of a pin m. This valve may, however, be of any shape on its periphery, the circular form being most convenient to make. It is free to move laterally to such extent as secures a close bearing on the valve faces, these being pressed together by the loose follower K and the spring T, as before explained. The air valveLis adjustable on the stem M by means of the screw nuts V, so the relative amount of air and oil or fuel can beaccurately proportioned by adjusting this valve L up or down on the stem M, thus regulating the range of the feed valve 0, and the amount admitted at each stroke. On the stem M is placed a spring W that, in addition to the weight of the parts, maintains an elastic downward pressure, and causes the valves to close instantly when released, as will be presently explained.

A cap or cover X is provided for examining and adjusting the valve 0, or if necessary the chamberN can be removed by taking out the screws Y Y, shown in Fig. 3.

The operation of the apparatus is as follows: When the piston of the engine A makes its downward ,or inward stroke, the exhaust valve being closed, a partial vacuum is formed in the cylinder. This relieves the pressure on the top of thevalve L, which then raises by pressure of the atmosphere through the pipe E, the air then rushes in as indicated by the arrows in Fig. 2, and at the same time a quantity of the liquid fuel is drawn in through the aperture e and the groove min the sliding valve 0,

and mingles with the air, so as to form an explosive vapor or gas that rushes through the pipe F, and a second valve into the engine cylinder, and is there ignited in the usual manner.

Having thus explained the nature and objects of my invention, what I claim is- 1. In combination with a gas or vapor engine, a carbureting apparatus, as herein described,containing inlet valves for air and liquid fuel, both connected with and operated by a single stem and by atmospheric pressure; the valve for liquid fuel loosely mounted in an eye or yoke, and sliding on a perforated face or seat and free to adjust itself thereto, in the manner substantially as described.

2. In combination with a gas or vapor engine, a carbureting apparatus, as herein described, consisting of air actuated valves for admitting and proportioning air and liquid fuel, the air valve adjustably mounted, but rigidly held on astem for operating bot-h the air and fuel valves, the fuel valve having a port or groove passing more or less over an inlet perforation in its seat, as the amount of oil required may demand, the stroke being adjustable as to its range by an externally operated screw, in the manner substantially as herein described.

3. In combination with a gas or vapor engine, a carbureting apparatus, as herein described, for admit-ting air and liquid fuel and mingling the same; two valves, one forair and one for liquid fuel, both mounted on or operated by one stem, and relatively adjustable so as to proportion the air and fuel, the valves so arranged as to open by atmospheric pressure, and close by a spring, in the manner substantially as and for the purposes described.

4. In combination with a gas or vapor engine, a carbureting apparatus, as herein described, the main body of the apparatus containing-an air valve, and a separable chamber containing a fuel valve, the latter sliding on a perforated seat, and held thereto by a follower and spring in the manner shown, both valves connected with and operated by one stem, and relatively adjustable thereon so the amount of air and fuel admitted may be proportioned at will, in the manner substantially as described.

5. In a carbureting apparatus, an air valve, an oil valve, a common stem for said valves having an eye which provides a seat for one of them, substantially as described.

6. In a carburetingapparatus havinginlets and outlets for air and liquid fuel, the two valves substantially as described, one for air and one for oil and stem for said valves which is formed with an eye which provides a seat for the oil valve wherein the valve is laterally movable between the pressure of the parts on both sides, substantially as described.

In testimony whereof I have hereunto affixed my signature in the presence of two witnesses.

GEORGE E. HOYT.

Witnesses:

ALFRED A. ENQUIST, WILson D. BENT, Jr. 

